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Round|Lab Grown|IGI

0.99ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG659428177

Shape and cutting style on the report: Round brilliant

Certificate IGI LG659428177

Diamond specifications and retailer prices

From $204 SGD
$159 USD
As of November 3, 2026
1 retailer carries this diamond
Only listing: $204 SGD at William & Sons Jewelers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at William & Sons Jewelers

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG659428177 or 659428177. Listed at a single retailer as of November 3, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659428177
Dimensions6.37 × 6.39 × 3.97 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
Presence of Subsurface inscription: Lightbox logo
Top View
6.37 mm6.39 mm0.99 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG659428177
Side View
Table 56.0%Crown 34.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $524 SGD|Low: $145 SGD|High: $1,171 SGD|Avg: $649 SGD|+43.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
William & Sons Jewelers
October 25, 2026
William & Sons Jewelers$204 SGD
Retailer 2$400 SGD
Retailer 1$524 SGD
Retailer 3$692 SGD
Retailer 4$1,171 SGD

15 data points across 5 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG659428177 · Nov 3
$204 SGD
$159 USD
View
Final sale: no returns

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.99ct Round
$204 SGD